The goal is to defeat the Demon Zeno and save the princess. To defeat the Demon, you must have enough attack, defense, and health points. Potions can restore health points, and crystals can increase attack or defense. Gold can be offered in altars in exchange for attack, defense or health points. Stairs allow you to go between different floors, and each floor has different obstacles (i.e. locked doors, monsters, bosses). Keys can be used to unlock doors of corresponding color, and monsters must be fought to get through. There are also special items in the game, and you will have a lot fun with them. Good luck and have fun.